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    <a href="../index.html">cppreference.com</a> &gt; <a href=
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    "setjmp.html">setjmp</a>
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  <div class="name-format">
    setjmp
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    Syntax:
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  <pre class="syntax-box">
  #include &lt;setjmp.h&gt;
  int setjmp( jmp_buf envbuf );
</pre>

  <p>The setjmp() function saves the system stack in <em>envbuf</em>
  for use by a later call to <a href="longjmp.html">longjmp</a>(). When
  you first call setjmp(), its return value is zero. Later, when you
  call <a href="longjmp.html">longjmp</a>(), the second argument of
  <a href="longjmp.html">longjmp</a>() is what the return value of
  setjmp() will be. Confused? Read about <a href=
  "longjmp.html">longjmp</a>().</p>

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    Related topics:
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    <a href="longjmp.html">longjmp</a>
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